Journal of Research in Electrical Circuits and Systems ISSN: 3139-2059 (Online)

Abstract

Time synchronisation is essential to keep a correct clock. A low-cost GPS NTP server has been accomplished in this work utilising a cheap arduino, GPS receiver, and ethernet shield. The performance of a low-cost GPS NTP server was compared to that of a commercial GPS NTP server (TM1000A). The findings indicated that both time servers had a 100% synchronisation success rate, with an average clock offset of -8,69 ms for the low cost GPS NTP server and -10,1538 ms for the TM1000A. However, as compared to a low-cost GPS NTP server, the TM1000A has a superior clock offset deviation area. The TM1000A has a lower clock offset deviation area of -8 ms to -12 ms, but the low cost GPS NTP server has a greater clock offset deviation area of -20 ms to +10 ms. We provide affordable GPS NTP servers as an alternative GPS NTP server for time synchronisation on computer networks, with manufacturing costs of less than 29 USD.

Keywords: GPS time server, , time synchronisation, : arduino, minimal cost